pytest.ini: Add -rf flag

We use this in CI, and it is generally useful, so lets not require
manually adding it.

Author: Lorak-mmk

pytest.ini

@@ -3,3 +3,4 @@ log_format = %(asctime)s.%(msecs)03d %(levelname)s [%(module)s:%(lineno)s]: %(me
 log_level = DEBUG
 log_date_format = %Y-%m-%d %H:%M:%S
 xfail_strict=true
+addopts = -rf